FULL-AREA CONNECTION OF HEAT-TRANSFER BLOCKS BY HYDRAULIC WIDENING OF PIPES BETWEEN PROFILES

摘要

The invention relates to a plate-type heat exchanger having at least a first and second heat-transfer block, wherein each block has multiple separating plates, which are arranged parallel to one another, which form a multiplicity of heat-transfer passages for fluids taking part in the heat transfer. The heat-transfer blocks are outwardly bounded by cover plates. A first cover plate of the first heat-transfer block is secured to an opposite second cover plate of the second heat-transfer block. At least one elongate first profile is secured to the first cover plate. At least one elongate second profile running parallel to the at least one first profile is secured to the second cover plate such that the two profiles are opposite one another in a direction parallel to the cover plates. Between the two profiles there is an interspace in which an elongate element is arranged in an interference fit with the two profiles, such that the two cover plates and thus the two heat-transfer blocks are secured to one another. The elongate element is designed as a hollow profile.